Fluid Mechanics MCQ Questions & Answers

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Each section contains 100 MCQs on Fluid Mechanics .

Which of the following quantities are computed by using the hydraulic radius for non-circular ducts?

A) Velocity and relative roughness B) Head loss and velocity C) Reynold number, relative roughness and head loss D) Reynolds number and friction factor

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The ratio of wall drag to total drag in the Stoke's law range is

A) 0.5 B) 1 C) $$\frac{1}{3}$$ D) $$\frac{2}{3}$$

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The most serious disadvantage of an orificemeter is that

A) It is not very accurate B) It is very costly C) Most of the pressure drop is not recoverable D) It is not suitable for measuring gas flow

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

For a reciprocating pump, the indicator diagram is the graph between the

A) Discharge and overall efficiency B) Volume swept by piston for one complete revolution and the pressure in the cylinder C) Angle swept by the crank pin at any instant and the discharge D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Reciprocating pumps are not able to compete with the centrifugal pump for industrial use, mainly because these pumps have

A) Very low speeds B) Smaller discharge C) Higher capital &maintenance cost D) High vibrations

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Propeller type centrifugal pumps are most suitable for

A) High capacity at high heads B) High capacity at low heads C) Low capacity at high heads D) Low capacity at low heads

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The pipe wall thickness is minimum for a pipe of given nominal size having schedule number

A) 160 B) 120 C) 80 D) 40

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The equivalent diameter for fluid flow through square cross section channel of side 'x', for pressure drop calculation purpose is given by

A) 4x B) 2x C) x D) $$\sqrt {\text{x}} $$

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following two quantities when same, makes one pipe system equivalent to another pipe system?

A) Head & discharge B) Length & discharge C) Length & diameter D) Friction factor & diameter

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration.

A) Normal B) Local C) Convective D) Tangential

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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Fluid Mechanics MCQ Questions & Answers | Chemical Engineering